Question #406ac

1 Answer
Sep 17, 2017

A 1x1 matrix, that consequently has only one element.

Explanation:

In a singleton matrix, there is only one element. That is, #A_(mxn)#, an m by n matrix, is a singleton matrix if and only if m = n = 1. Thus, any singleton matrix will take the form #[u]#, where u is any entry that might be put in a matrix; 3, -2, #x^2#, #sin x#, etc.